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Author Question: A college basketball player has been keeping track of his free throw shooting practice over the ... (Read 142 times)

mia

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on: Jun 24, 2018
A college basketball player has been keeping track of his free throw shooting practice over the summer. Each day that he practices, he shoots 150 free throws and counts the number he makes. Today he made 117 free throws. What is the 95 confidence interval around this sample?

Question 2

A filling machine is designed to fill soda bottles with 16 ounces of soda. The distribution for the weight of the bottles is normal. Twenty bottles are selected and weighed. The sample mean is 15.3 ounces and sample standard deviation is 1.5 ounces. Develop a 90 confidence interval for this sample. What can we conclude about this filling process?


CharlieArnold

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Reply #1 on: Jun 24, 2018
Answer to Question 1

0.78  0.066

Answer to Question 2

14.72 ounces, 15.88 ounces. Since this interval does not contain 16 ounces, the process is not working properly.


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